This is fiendishly tricky - as it should be as a rage platformer! I liked being able to catch myself with arms, there was almost a puzzle aspect figuring out the best way to traverse each section of the level.
I thought the menu screen was a nice touch, immediately dropping me into the action and giving me a little challenge to even start the game got me into the right mindset from the start.
I did find it frustrating that the music reset each time I died, especially as I was dying a lot - if there's a way to prevent the level reset interrupting the loop that would be amazing.
Edit: just read your devlog and seen that you're aware of the music issue - hope you manage to find a fix that works for you! Don't know how you've put this together, but would resetting the player's location on death rather than reloading the level work?